contrib/benchmarks/revset.py

rust-changelog: removed now useless early conditional for NULL_REVISION

Now that the underlying `RevlogEntry` returned for `NULL_REVISION` is
viable, it has become pointless to check NULL_REVISION several times,
even for performance: the check will be far more frequent than the benefit
of bailing earlier in the rare case where the requested revision is
`NULL_REVISION`.

This case is covered explicitly by the first assertion of
`test_data_from_rev_null`.

# revset.py - asv revset benchmarks
#
# Copyright 2016 Logilab SA <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

'''ASV revset benchmarks generated from contrib/base-revsets.txt

Each revset benchmark is parameterized with variants (first, last, sort, ...)
'''


import os
import string
import sys

from . import basedir, perfbench


def createrevsetbenchmark(baseset, variants=None):
    if variants is None:
        # Default variants
        variants = ["plain", "first", "last", "sort", "sort+first", "sort+last"]
    fname = "track_" + "_".join(
        "".join(
            [c if c in string.digits + string.letters else " " for c in baseset]
        ).split()
    )

    def wrap(fname, baseset):
        @perfbench(name=baseset, params=[("variant", variants)])
        def f(perf, variant):
            revset = baseset
            if variant != "plain":
                for var in variant.split("+"):
                    revset = "%s(%s)" % (var, revset)
            return perf("perfrevset", revset)

        f.__name__ = fname
        return f

    return wrap(fname, baseset)


def initializerevsetbenchmarks():
    mod = sys.modules[__name__]
    with open(os.path.join(basedir, 'contrib', 'base-revsets.txt'), 'rb') as fh:
        for line in fh:
            baseset = line.strip()
            if baseset and not baseset.startswith('#'):
                func = createrevsetbenchmark(baseset)
                setattr(mod, func.__name__, func)


initializerevsetbenchmarks()